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Picking refurbished HPLC instruments could be a risky thing if you are not sure about what to check. There are professional refurbished dealers who offer equipment of high quality along with installation, repair, maintenance and training services. If you are picking used hplc instruments, you need to check if you can operate the instrument and if there is any training associated with the purchase. You should be able to schedule on-time maintenance to make sure that the instrument is operative in prime condition for a long time. It is important to understand the specifications of the instrument when you are looking to need it for the long term. When you are picking used HPLC equipment, it is important to understand the options that the instruments come. For example, some of the options that you get with a Quaternary Gradient include single wavelength UV visible, four wavelength UV-visible and high resolution PDA along with optical rotation, circular dichroism and refractive index. It is important to check if the equipment has been manufactured making use of high-grade materials and technology as that will ensure greater reliability. The best equipment comes with excellent software systems that offer direct control and great user interfaces. Besides, some refurbished equipment service providers offer expertise in software systems providing training if required for optimum operation. It is important to request for quotes especially when you are purchasing several instruments in bulk as that could lower the markup to a certain extent. There are method development HPLC systems for example, that come with solvent selection modules and column selection modules providing additional options. Therefore, not only should you check for warranty and quality of construction but also features that you may need for your purposes of used HPLC equipment and features that can be operative through on-time maintenance.
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